What is the purpose of a packing gland?

The purpose of a packing gland is to compress the packing in a stuffing box. In pumping systems and valves, the packing is a material that provides a seal around the moving parts to prevent leaks. The packing gland exerts pressure on this packing material, ensuring it maintains contact with the shaft or stem, which creates a tight seal. Proper compression is crucial because it not only helps to control leaks but also allows for the movement of the shaft or valve while maintaining effective sealing.

In contexts such as water treatment plants, this function is essential for maintaining operational efficiency and safety, as leaks can lead to contamination or loss of pressure in the system. By compressing the packing correctly, the packing gland plays a vital role in the overall integrity and functionality of the equipment.